Interested to Buy Any Domain ? << Click Here >> for more details...
how to calculate knee point voltage of current transformer?
- 21 Answers
- 157504 Views
- Bhel, Bhilai, Jackson, I also Faced
- E-Mail Answers
Answer Posted / rajkumar
Knee Point Voltage Vk = IFsc * K * (Rct+(2*RL)+Rr)
Where,
IFsc - Fault current at the secondary of CT
IFsc->IFprimary/CT Ratio
IFprimary -> Fault MVA at primary/(1.732*Primary Voltage)
K - Dimensioning Factor
Rct - CT Resistance
RL - Lead Resistance
Rr - Resistance of relay to which CT is connected
Knee point voltage is the voltage at which 10% raise in secondary voltage will result in 50% raise in current..
| Is This Answer Correct ? | 2 Yes | 2 No |
Post New Answer View All Answers
What are the types of instrument transformer?
What is ST and specify its range of voltage.
why steady state stability limit is greater than transient stability limit ? How it can be explained ?
What is principle of Floroscent tube 36watt.
What are the applications of different multistage amplifiers?Plz also write advantages of these amplifiers? Thaaaaaaaaanx
How much ph is maintained of water electrolyte which is used in LRS for 1200 kw slipring induction motor ?
What is the main cause of magnetism?
Anybody know how schematic diagram for reverse power relay? RPR for generator protection
How many types oil using in transformer ? How many letars using in transformer..?
What is the basic of DTH.
what is meant by moulded case circuit breaker ?
how to calculate transformer load?
what should be correct gas pressures to be a 1.5 ac unite
What is trip and closing coil in cb? Why need of them
what is the grounding Calculation formula? spouse i want to provide grounding to 3phase 18kw motor or i want to provide ground to 3phase 10kva dry type transformere or you give me any exemple...... Thanks.
